Five things you need to know about ransomware

Over the past few years millions of PCs from around the world have been locked or had their files encrypted by malicious programs designed to extort money from users. Collectively known as ransomware, these malicious applications have become a real scourge for consumers, businesses and even government institutions. Unfortunately, there's no end in sight, so here's what you should know.

It's not just your PC that's at risk

Most ransomware programs target computers running Windows, as it's the most popular operating system. However, ransomware applications for Android have also been around for a while and recently, several variants that infect Linux servers have been discovered.